Planting flowers along crop field edges is an increasingly common management strategy for addressing pollinator declines and improving crop pollination. However, few reviews have been published summarizing the efficacy of this specific management practice and how it impacts ecosystem service delivery to crops. We conducted a systematic review (54 studies) and meta-analysis (4–29 studies, depending on the response) to determine whether such plantings 1) increase pollinator abundance or richness within field edges, 2) increase the abundance or richness of pollinators visiting crop flowers, or 3) improve crop yields. Our review and meta-analysis suggest that field-edge flower plantings are highly effective at increasing pollinator richness and abundance in field edges and that plantings become more effective as they mature. However, the influence of field-edge plantings on crop pollination and yield is inconsistent. Planting size and richness did not change these results. While this analysis shows that field-edge flower plantings consistently increase pollinator abundance and richness, there remain critical gaps in our knowledge of when and how plantings can improve ecosystem service provision and delivery. Determining if field-edge plantings affect pollinator population growth may clarify how plantings improve crop pollination, while further research on landscape context and crop type may define when this happens.

沿着作物田间边缘种花是解决传粉媒介减少和改善作物授粉的一种日益普遍的管理策略。但是，几乎没有发表综述这种特定管理实践的效力及其对作物生态系统服务的影响的综述。我们进行了系统评价（54项研究）和荟萃分析（4-29项研究，具体取决于响应），以确定此类种植是否1）增加田间边缘的传粉媒介丰度或丰富度，2）增加来访的传粉媒介的丰度或丰富度作物花，或3）提高作物产量。我们的评论和荟萃分析表明，田间边缘花卉种植在增加传粉者在田间边缘的丰富度和丰度方面非常有效，并且随着成熟，种植会变得更加有效。然而，田间种植对作物授粉和产量的影响不一致。种植面积和丰富度并没有改变这些结果。尽管此分析表明，田间边缘的花卉种植会不断增加授粉媒介的丰度和丰富度，但我们在何时何地可以改善生态系统服务提供和交付方面的知识仍然存在重大差距。确定田间边缘种植是否影响授粉媒介种群的增长可能会澄清种植如何改善作物授粉，而有关景观背景和作物类型的进一步研究可能会确定何时发生。我们在何时以及如何种植可以改善生态系统服务的提供和交付方面的知识方面仍然存在重大差距。确定田间边缘种植是否影响授粉媒介种群的增长可能会澄清种植如何改善作物授粉，而有关景观背景和作物类型的进一步研究可能会确定何时发生。我们在何时以及如何种植可以改善生态系统服务的提供和交付方面的知识方面仍然存在重大差距。确定田间边缘种植是否影响授粉媒介种群的增长可能会澄清种植如何改善作物授粉，而有关景观背景和作物类型的进一步研究可能会确定何时发生。